Ṣe iyatọ laarin 420 420J1 ati 420J2 awọn abuda iṣẹ ṣiṣe irin alagbara:
Iyatọ akọkọ laarin irin alagbara 420J1 ati 420J2
420J1 ni awọn ipele kan ti yiya resistance ati ipata resistance, ga líle, ati awọn oniwe-owo ni kekere ti awọn irin alagbara, irin balls. O dara fun agbegbe iṣẹ ti o nilo irin alagbara irin lasan.
420J2 irin alagbara, irin igbanu jẹ ami iyasọtọ ti irin alagbara ti a ṣe ni ibamu pẹlu awọn iṣedede ASTM Amẹrika; Japanese boṣewa SUS420J2, titun orilẹ-boṣewa 30Cr13, atijọ orilẹ-boṣewa 3Cr13, oni koodu S42030, European bošewa 1.4028.
420J1 alagbara, irin: Lẹhin ti quenching, awọn líle jẹ ga, ati awọn ipata resistance jẹ ti o dara (oofa). Lẹhin piparẹ, irin alagbara 420J2 le ju irin 420J1 (oofa).
Ni gbogbogbo, awọn quenching otutu ti 420J1 ni 980 ~ 1050 ℃. Lile ti 980 ℃ alapapo epo quenching jẹ significantly kekere ju 1050 ℃ alapapo epo quenching. Lile lẹhin 980 ℃ epo quenching ni HRC45-50, ati awọn líle lẹhin 1050 ℃ epo quenching jẹ 2HRC ti o ga. Sibẹsibẹ, microstructure ti o gba lẹhin piparẹ ni 1050 ℃ jẹ isokuso ati brittle. O ti wa ni niyanju lati lo 1000 ℃ alapapo ati quenching lati gba dara be ati líle.
Irin Alagbara 420 / 420J1 / 420J2 Awọn iwe & Awọn ipele deede Awọn awo:
| ITOJU | JIS | WORKSTOFF NR. | BS | AFNOR | SIS | UNS | AISI |
| SS 420 | SUS 420 | 1.4021 | 420S29 | - | 2303 | S42000 | 420 |
| SS 420J1 | SUS 420J1 | 1.4021 | 420S29 | Z20C13 | 2303 | S42010 | 420L |
| SS 420J2 | SUS 420J2 | 1.4028 | 420S37 | Z20C13 | 2304 | S42010 | 420M |
SS420 / 420J1/ 420J2 Sheets, Awo Kemikali Tiwqn (irin saky):
| Ipele | C | Mn | Si | P | S | Cr | Ni | Mo |
| SUS 420 | ti o pọju 0.15 | 1.0 ti o pọju | 1.0 ti o pọju | ti o pọju 0.040 | ti o pọju 0.030 | 12.0-14.0 | - | - |
| SUS 420J1 | 0.16-0.25 | 1.0 ti o pọju | 1.0 ti o pọju | ti o pọju 0.040 | ti o pọju 0.030 | 12.0-14.0 | - | - |
| SUS 420J2 | 0.26-0.40 | 1.0 ti o pọju | 1.0 ti o pọju | ti o pọju 0.040 | ti o pọju 0.030 | 12.0-14.0 | - | - |
SS 420 420J1 420J2 Awọn iwe, Awọn ohun-ini Mechanical Plates(irin saky):
| Ipele | Agbara Fifẹ Max | Agbara ikore (0.2% aiṣedeede) O pọju | Ilọsiwaju (ni 2 in.) |
| 420 | MPa – 650 | MPa – 450 | 10% |
| 420J1 | MPa – 640 | MPa – 440 | 20% |
| 420J2 | MPa – 740 | MPa – 540 | 12% |
Lile ti 420 jara irin lẹhin itọju ooru jẹ aijọju HRC52 ~ 55, ati iṣẹ ti awọn oriṣiriṣi awọn aaye bii resistance bibajẹ kii ṣe iyalẹnu pupọ. Nitoripe o rọrun lati ge ati didan, o dara fun iṣelọpọ awọn ọbẹ. 420 irin alagbara, irin ti wa ni tun npe ni "Ige ite" martensitic, irin. 420 jara, irin ni o ni o tayọ ipata resistance nitori awọn oniwe-kekere erogba akoonu (erogba akoonu: 0.16 ~ 0.25), ki o jẹ ẹya bojumu irin fun isejade ti iluwẹ irinṣẹ.
Akoko ifiweranṣẹ: Oṣu Keje-07-2020